00000396.htm

7 MINORS OF A DETERMINANT 379

matrix of matrices "

^k22

u =

\Q 0 ••• X

^Tl

where Xy is an w^xm,- matrix, we have
(A.7.4.2) det U = (det X_n)(det X₂₂) • - - (det X_rr)

(" Computation of a determinant by blocks").



7 MINORS OF A DETERMINANT 379

matrix of matrices "

/	^1 0	^k22
u =	^1 0	^k22

\Q 0 ••• X			^Tl

where Xy is an w^xm,- matrix, we have (A.7.4.2) det U = (det X_n)(det X₂₂) • - - (det X_rr) (" Computation of a determinant by blocks").